[Wallet] Fix regression bug for mint request (#513)

* fix regression bug for mint request

* expiry is absolute time

cashu/wallet/wallet_deprecated.py

@@ -17,10 +17,10 @@
     GetInfoResponse,
     GetInfoResponse_deprecated,
     GetMintResponse_deprecated,
-    Invoice,
     KeysetsResponse_deprecated,
     PostMeltRequest_deprecated,
     PostMeltResponse_deprecated,
+    PostMintQuoteResponse,
     PostMintRequest_deprecated,
     PostMintResponse_deprecated,
     PostRestoreResponse,
@@ -226,7 +226,7 @@ async def _get_keyset_ids_deprecated(self, url: str) -> List[str]:
 
     @async_set_httpx_client
     @async_ensure_mint_loaded_deprecated
-    async def request_mint_deprecated(self, amount) -> Invoice:
+    async def request_mint_deprecated(self, amount) -> PostMintQuoteResponse:
         """Requests a mint from the server and returns Lightning invoice.
 
         Args:
@@ -244,12 +244,11 @@ async def request_mint_deprecated(self, amount) -> Invoice:
         return_dict = resp.json()
         mint_response = GetMintResponse_deprecated.parse_obj(return_dict)
         decoded_invoice = bolt11.decode(mint_response.pr)
-        return Invoice(
-            amount=amount,
-            bolt11=mint_response.pr,
-            id=mint_response.hash,
-            payment_hash=decoded_invoice.payment_hash,
-            out=False,
+        return PostMintQuoteResponse(
+            quote=mint_response.hash,
+            request=mint_response.pr,
+            paid=False,
+            expiry=decoded_invoice.date + (decoded_invoice.expiry or 0),
         )
 
     @async_set_httpx_client